Free Online Security Tools
Professional-grade security and developer utilities. All processed locally in your browser for maximum privacy.
Encoding & Decoding
Base64 Codec
Encode and decode Base64 with UTF-8 support. URL-safe variant available for web applications.
ActiveURL Codec
Encode, decode, and parse URLs. Analyze query parameters and detect double encoding issues.
ActiveJWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, expiry status, and security warnings.
ActiveSecurity & Cryptography
Password Generator
Generate cryptographically secure passwords with customizable length, character sets, and entropy analysis.
ActiveHash Generator
Generate cryptographic hashes (SHA-1, SHA-256, SHA-384, SHA-512) for digital forensics, data integrity, and security analysis.
ActiveEntropy Calculator
Calculate Shannon entropy to measure randomness and data quality. Analyze passwords and cryptographic keys.
ActiveSSL/TLS Decoder
Free SSL certificate decoder and analyzer. Inspect and validate SSL/TLS certificates for security audits and troubleshooting.
ActiveCSP Parser
Parse and analyze Content Security Policy headers. Flag security issues and get improvement recommendations.
ActiveHTTP Header Analyzer
Analyze HTTP security headers and get a security grade with recommendations for improvement.
ActiveNetwork & Infrastructure
IP Calculator
Online CIDR calculator to analyze IP ranges, subnets, and network masks for comprehensive network security assessments and planning.
ActiveNetplan Generator
Free online tool to generate and validate network configurations for secure infrastructure testing. Perfect for DevOps and security professionals.
ActiveData & Utilities
JSON Formatter
Online JSON formatter and validator. Parse, validate, and beautify JSON for API security testing and payload analysis.
ActiveYAML Validator
Free YAML configuration validator. Detect misconfigurations and security risks in YAML files for Kubernetes, Ansible, and Docker.
ActiveRegex Builder & Tester
Online regex pattern builder and tester. Create and test regular expressions for log analysis, data extraction, and threat detection.
ActiveUUID Generator
Generate unique identifiers (UUID/GUID) for test cases, security assessments, and application development.
ActiveTimestamp Converter
Convert between Unix timestamps, ISO 8601, and human-readable dates with timezone support.
ActiveUser Agent Parser
Parse User-Agent strings to extract browser, OS, device type, and detect bots and crawlers.
ActiveWhy Choose Our Tools?
100% Browser-Based
All tools run entirely in your browser. Your data never leaves your device, ensuring complete privacy and security.
Instant Results
No server round-trips means lightning-fast processing. Get results immediately without waiting for network requests.
Developer-Friendly
Built by developers, for developers. Clean interfaces, keyboard shortcuts, and copy-to-clipboard functionality.